RT info:eu-repo/semantics/article
T1 Wobbling kinks and shape mode interactions in a coupled two-component ϕ4 theory
A1 Alonso Izquierdo, Alberto
A1 Miguélez Caballero, David
A1 Nieto Calzada, Luis Miguel
K1 Radiación
K1 Física
K1 ϕ4 theory
K1 Radiation
K1 Longitudinal and orthogonal modes
K1 Teoría de ϕ4
K1 Radiación
K1 Modos longitudinales y ortogonales
K1 2207.03 Física Atómica
AB The dynamics of a wobbling kink in a two-component coupled scalar field theory (with an excited orthogonal shape mode) is addressed. For this purpose, the vibration spectrum of the second order small kink fluctuation is studied in order to find the corresponding vibration modes associated to the first (longitudinal) and second (orthogonal) field components. By means of this analysis, it was found that the number of possible shape modes depends on the value of the coupling constant. It is notable that when one of the orthogonal field shape modes is initially triggered, the unique shape mode of the longitudinal field is also activated. This coupling causes the kink to emit radiation with twice the frequency of excited mode in the first field component. Meanwhile, in the orthogonal channel we find radiation with two different frequencies: one is three times the frequency of the orthogonal wobbling mode and another is the sum of the frequencies of the longitudinal shape mode and the triggered mode. All the analytical results obtained in this study have been successfully contrasted with those obtained through numerical simulations.
PB Elsevier
SN 0960-0779
YR 2024
FD 2024
LK https://uvadoc.uva.es/handle/10324/63672
UL https://uvadoc.uva.es/handle/10324/63672
LA eng
NO Chaos, Solitons & Fractals, 2024, vol. 178, 114373
NO Producción Científica
DS UVaDOC
RD 19-nov-2024